Guidance

UK Royal Navy submarines

The different types of UK nuclear submarine and what they do.

• From: Submarine Delivery Agency
• Published: 24 July 2024
• Last updated: 19 February 2025 — See all updates

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Types of UK Royal Navy submarine

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The SDA is responsible for the procurement, in-service support and disposal of decommissioned UK nuclear submarines. The Royal Navy operates both Attack Submarines (SSN, Ship Submersible Nuclear) and Ballistic Missile Submarines (SSBN, Ship Submersible Ballistic Nuclear). 

Published 24 July 2024
Last updated 19 February 2025 + show all updates

1. 19 February 2025

   The name of boat seven has been updated to Achilles in section 1.1 paragraph one.

2. 24 July 2024

   First published.